Q: How do I purchase Aperture photo book I made

From Apple? You can't. They no longer support printing services from Aperture or iPhoto since March 31st 2016.

You can output a pdf of the book and seek out a 3rd party printing service wherever you are on the planet.

Apple is only printing books from Photos Libraries, but if you migrate an Aperture library to Photos, the books will not be migrated as books, just as albums, and you have to recreate the book. But Photos does not support custom themes, so the book cannot be exactly recreated.

See:  How to Print Aperture Books After the Print Services Have Been Discontinued

Some users have tried to have the PDF of Aperture books printed by Presto Photo:

See the link below on how to save the PDF file for printing with PrestoPhoto posted by PrestoMeghan:

Re: Re: how to export a book made in Aperture to make a similar book in Photos?

For the paper qualities see:  FYI on Books with Lustre Paper!

In this discussion are also reports by kgem and Astro7x about the first experiences with this service.

If you want the Aperture book to be printed by Apple, print your book to PDF and export the PDF file as separate JPEGS. Then create a book in Photos from the saved JPEGS. This will work for Extra-Large Hardcover books.

An Aperture Extra-large Hardcover Book ( 13 x 10 in., 33 x 25 cm) has the same size as a large Photos Classic Hardcover book.

Léonie is right - while Apple is only printing form Photos right now, Presto is still happily printing Aperture books directly, in even more sizes and papers than before. The easiest way to get started is:

https://www.prestophoto.com/help/Apple+Aperture+Printing

Short answer: File -> Print -> Save As PDF, then upload PDF to Presto. Our software does a good job at converting your file.. Handling dust jacket flaps, full page spreads and spread covers even.

We've been working on software and production updates all summer, and expect to have them live in the next couple of weeks!